head unit was installed (Jeep GC)? I have a 99' Jeep Grand Cherokee Limited with the Infinity Gold system, I just installed a Dual xhd7714 aftermarket head unit (radio). Everything seems to work except the sound quality is horrible compared to when i had the factory radio installed. The sound is clear, but not as loud as it used to be, even when i turn the volume to full its still not half as loud as it used to be, i am guessing this has something to do with the stock amplifier but i dont really know, does anyone know why this happened? did i blow the external amp or somthing?